Heat-resisting alloy



Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

i HARRY M. WILLIAMS, OF DAYTON, OHIO.

HEAT-RESISTING ALLOY.

No Drawing.

of 2.50 to 3.00% carbon, 3.00 to 3.50% silicon, 1.90 to 2.25% phosphorus and the remainder of iron. Sulphur and manganese 2 may exist as impurities in amounts not over The alloy is composed of iron, carbon, silicon and phosphorus, in the proportions- Application filed June 11, '1927. Serial No. 198,302.

.12% of sulphur and .80% of manganese.

A preferred composition consists of carbon 2.80%, silicon 3.25%, phosphorus 2.10% and the remainder iron.-

The described alloy may be prepared by melting pig or other iron associated with the requisite proportions of carbon and silicon and introducing ferro-phosphorus in such quantities as to give a mixture of the predetermined proportions in a manner well understood by metallurgists:

I claim:

1. A heat resistant alloy composed of iron, 2.50 to 3.00% carbon, 3.00 to 3.50% silicon and 1.90 to 2.25% phosphorus.

2. A heat resistant alloy composed of iron and substantially 2.80% carbon, 3.25% silicon and 2.10% phosphorus.

In testimony whereof I aflix my signature.

HARRY. M. lVILLIAMS. 

